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1.51ct K SI1 Round Natural Diamond

VG • K/SI1 • IGI 754512197

Shape and cutting style on the report: Round brilliant

Certificate IGI 754512197

Diamond specifications and retailer prices

From $2,620 SGD
As of November 6, 2026
Save $4,173 SGD (61%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,793 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 754512197. Listed at 20 retailers as of November 5, 2026, with prices from $2,620 to $6,793, a $4,173 spread on the same certified stone. NZ Jewellers lists it at $6,793. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.7°
Pavilion angle40.2°
OriginNatural
Grading LabIGI
CertificateIGI 754512197
Dimensions7.09 × 7.13 × 4.61 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.09 mm7.13 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 754512197
Side View
Table 57.0%Crown 38.7°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 64.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,793 SGD|Low: $2,620 SGD|High: $6,793 SGD|Avg: $3,764 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 6, 2026
Retailer 2$2,620 SGD
Retailer 19$2,804 SGD
Retailer 10$2,935 SGD
Retailer 3$2,938 SGD
Retailer 17$2,953 SGD
Retailer 5$3,249 SGD
Retailer 7$3,249 SGD
Retailer 8$3,329 SGD
Retailer 6$3,399 SGD
Retailer 4$3,428 SGD
Retailer 14$3,479 SGD
Retailer 13$3,538 SGD
Retailer 9$3,657 SGD
Retailer 11$3,749 SGD
Retailer 15$3,811 SGD
Retailer 16$3,966 SGD
Retailer 18$4,031 SGD
Retailer 12$4,998 SGD
Retailer 20$5,692 SGD
NZ Jewellers$6,793 SGD

23 data points across 20 retailers

20 retailers$2,620 SGD to $6,793 SGD

A
Cheapest Retailer
-
$2,620 SGD
A
Retailer 2
-
$2,804 SGD
View
B+
Retailer 3
-
$2,935 SGD
View
A
Retailer 4
-
$2,938 SGD
View
A
Retailer 5
-
$2,953 SGD
View
B+
Retailer 6
-
$3,249 SGD
View
Retailer 7
-
$3,249 SGD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$3,329 SGD
View
B+
Retailer 9
-
$3,399 SGD
View
B+
Retailer 10
-
$3,428 SGD
View
B+
Retailer 11
-
$3,479 SGD
View
B+
Retailer 12
-
$3,538 SGD
View
B+
Retailer 13
-
$3,657 SGD
View
B+
Retailer 14
-
$3,749 SGD
View
B+
Retailer 15
-
$3,811 SGD
View
B+
Retailer 16
-
$3,966 SGD
View
B+
Retailer 17
-
$4,031 SGD
View
B+
Retailer 18
-
$4,998 SGD
View
B+
Retailer 19
-
$5,692 SGD
View
Most Expensive
B
NZ Jewellers
bbce782d-a238-4417-9b66-8eb95b477819 · Nov 5
$6,793 SGD
$5,318 USD
View
19 more retailers have this diamond
Prices start from $2,620 SGDSave up to $4,173 SGD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Round
$2,620 SGD